Remote Direct Memory Access (RDMA) has been widely adopted in modern datacenters [1]}, [2]}, [3]},
pushing the network speed (towards 400 Gbps [4]}) and the distributed system performance [5]}, [6]}, [7]}, [8]}, [9]} to the next level.
However, the high-speed network requires more CPU resources to saturate a fast RDMA-capable NIC (RNIC) [10]},
which places a significant CPU burden on distributed systems [11]}.
One-sided RDMA can reduce the CPU pressures:
the RNIC can read and write host memory in a CPU-bypass way.
However, the limited offloading capabilities cause network amplifications
and thus degrade the system performance [12]}, [13]}.
